(Strongly interacting fermion system): Annual performance for 1988--89
The following developments have occurred: A new fixed-point (not quite a phase transition) has been identified for the two-impurity Kondo system. The methodology for electronic structure has been improved both with a procedure for variationally constructing efficient meshes for numerical computation and with improved two- electron correlations in variational wave functions. In the later case we can, for several atoms, improve on what has been achieved by the Green Function Monte Carlo method. Work on the models of high-temperature superconductivity has resulted in an improved mean-field treatment for the Hubbard model that is capable of predicting a variety of phases and associated correlation functions and in an electric quadrupole fluctuation mechanism for oxygen-hole pairing in the cuprate high-T/sub c/ superconductors.
- Research Organization:
- The Ohio State Univ., Columbus, OH (United States)
- DOE Contract Number:
- FG02-88ER45347
- OSTI ID:
- 6218943
- Report Number(s):
- DOE/ER/45347-10; ON: DE89011588; TRN: 89-013811
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Numerical simulation of quantum many-body systems. Progress report for March 1, 1991--September 1, 1993
(Strongly interacting fermion system)
Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRONIC STRUCTURE
CALCULATION METHODS
FERMIONS
SUPERCONDUCTIVITY
CORRELATION FUNCTIONS
MONTE CARLO METHOD
PROGRESS REPORT
TRANSITION TEMPERATURE
WAVE FUNCTIONS
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FUNCTIONS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
656100* - Condensed Matter Physics- Superconductivity
656002 - Condensed Matter Physics- General Techniques in Condensed Matter- (1987-)